AC Input Reactors

An AC Input reactor is installed at the input side of the variable frequency inverter, to reduce the inrush and peak current. Improve the power factor and input current waveform as well as suppressing the harmonics.

Their function is to reduce the current distortion caused by the input stage rectifiers by slowing the rate of change of current and thus charging the internal capacitor at a slower rate over a longer time.

Gator Products supplies standalone AC Input reactors from 1.5kW right up to 450kW.

More Information

If the supply is very low impedance the AC reactor will be required to limit current into the inverter; particularly the input rectifiers and capacitors. A low impedance supply is one where, when the inverter is running at full load, the voltage drop measured at the input terminals is one percent or less. If the short circuit current of the supply is 200 times greater than the full load input current of the inverter, the supply impedance is low. A low impedance supply will cause high currents to flow in the input rectifies and DC link capacitors, and may cause overheating.

If the supply is subject to transients, voltage peaks etc. The AC reactor will reduce these and protect the inverter from damage. Voltage surges and transients can be caused by power switching, lighting strikes, or badly regulated supplies. In an industrial installation, transients may be caused by old DC drives, welding equipment, load switching, and especially power factor correction equipment. The inverter is protected from transients internally, but where frequent transients of high energy are expected, an input AC reactor will limit the magnitude and energy adsorbed by the inverter.

Models

AC Input Reactor Model

Power Size (kW)

Maximum Amps

MCREACL0005EISC

1.5

5

MCREACL0007EISC

2.2

7

MCREACL0010EISC

4

10

MCREACL0015EISH

5.5

15

MCREACL0020EISH

7.5

20

MCREACL0030EISH

11

30

MCREACL0040EISH

15

40

MCREACL0050EISH

18.5

50

MCREACL0060EISH

22

60

MCREACL0080EISC

30

80

MCREACL0090EISC

37

90

MCREACL0120EISH

45

120

MCREACL0150EISH

55

150

MCREACL0200EISH

75

200

MCREACL0250EISH

90/110

250

MCREACL0290EISH

132

290

MCREACL0330EISH

160

330

MCREACL0490EISH

220

490

MCREACL0530EISH

250

530

MCREACL0600EISH

280

600

MCREACL0660EISH

300

660

MCREACL0800EISH

380

800

MCREACL1000EISH

450

1000

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